Categories
genstrings ios objective-c swift

genstrings chokes when using the value parameter in Swift

I have a basic Swift file Test.swift which contains

import Foundation
import UIKit
class Test: NSObject {
let a: String
let b: String
override init() {
a = NSLocalizedString("key 1", tableName: nil,
bundle: NSBundle.mainBundle(), value: "value 1", comment: "comment 1")
b = NSLocalizedString("key 2", comment: "comment 2")
}
}

When I run genstrings on this file I receive an unexpected warning

$ genstrings -u Test.swift
Bad entry in file Test.swift (line = 9): Argument is not a literal string.

and the generated Localizable.strings file is missing the entry for "key 1"

$ cat Localizable.strings 
??/* comment 2 */
"key 2" = "key 2";

However, when I do the equivalent in Objective-C using the below code in a file Test.m

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface Test: NSObject
@property (nonatomic, strong) NSString *a;
@property (nonatomic, strong) NSString *b;
@end
@implementation Test
- (id)init {
self = [super init];
if (self) {
self.a = NSLocalizedStringWithDefaultValue(@"key 1", nil, [NSBundle mainBundle], @"value 1", @"comment 1");
self.b = NSLocalizedString(@"key 2", @"comment 2");
}
return self;
}
@end

the genstrings command works as expected and I get the entry for "key 1".

$ genstrings -u Test.m 
$ cat Localizable.strings
??/* comment 1 */
"key 1" = "value 1";
/* comment 2 */
"key 2" = "key 2";

What am I doing wrong?